‘Greater-London’ (mentioned in the caption above) is the outskirts of London. Its wooded parts can be navigated to from inner-city London by Tube. It’s helpful to get out there, the time spent doing this has been worthwhile for us at Letterfit, rather than a perk or a luxury. Plus, you might see a hedgehog.
Here’s a link for planning London-based walking or running trails (also good for biking in some areas):
This is a useful (and free) planning app: